Math Inline

=======
$inline$|label$$block$$|label$a(b{c[d]})$
=======

(doc
    (math_block
        (math_lvl: "$")
        (math_body
            (math_chars: "inline")
        )
        (label (ident: "label"))
    )
    (math_block
        (math_lvl: "$$")
        (math_body
            (math_chars: "block")
        )
        (label (ident: "label"))
    )
    (math_block
        (math_lvl: "$")
        (math_body
            (math_chars: "a(b")
            (math_block_curly
                (math_chars: "c[d]")
            )
            (math_chars: ")")
        )
    )
)